Infinity Ward announcement next week?

It looks like Infinity Ward might be announcing their newest game this Saturday (4/28) according to a cryptic message posted on their message boards over the weekend. Infinity Ward is the developer behind the first two Call of Duty games so it might be the formal announcement of the fourth game in the series or it might be something else like a new James Bond game (Activision bought the license last year) or it could be something else entirely. I guess we'll have to wait until Saturday to get the full scoop.